1.) Consider the R,L, and C in series powered by AC supply. Discuss about the impedance, current and voltage changes in the circuit. What is the condition for the resonance in the circuit?

2.) Dicuss why sky is blue, sunsets are red, clouds are white, and water is greenish blue?

3.) Consider two different lenses (1 and 2) at distance d. Discuss about the equivalent focal length, net linear magnification, and the angular magnification of the Optical System.